Is income earning potential higher in urban areas?

In short, I think urban areas have a high temparature due to pollution and high population density.

OK, well I'm not an expert (I don't study this stuff) but I'm pretty sure because of all the pressure of the city and jobs and places to go to, the suicide rate is higher in urban areas, because...

Analogous to a ball rolling down a hill due to a difference in gravitational potential, the cell potential (denoted Eº or Eo) drives the electron flow in an electrochemical cell.

there are many reasons- 1.Cities are more wealthy places with factories and offices.

An urban area is an area that has been built up and developed by man. Uraban areas are usually cities.